Cloning promises genetic copies, but a growing body of research across dogs, mice, cattle, and primates shows that clones ...

A 20-year study has shown that, like photocopying photocopies, cloning doesn't produce perfect copies – with big implications ...

A team of American researchers has created cloned monkey embryos using a variation of the technique used to clone Dolly the sheep, and extracted stem cells from the early-stage embryos. The work ...